Chair base chassis device convenient to control tipping and lifting

Abstract

The invention discloses a chair base plate device convenient to control tipping and lifting, which comprises a base plate assembly, the base plate assembly comprises a base plate lower part and a base plate upper part, a control mechanism is arranged on the base plate lower part, the control mechanism comprises an operating rod and a supporting piece, and the supporting piece is connected to the base plate lower part in a left-right sliding manner; the operating rod is connected to the lower portion of the chassis in a left-right sliding mode and can rotate up and down relative to the lower portion of the chassis, the operating rod controls whether the air rod switch is pressed down or not through up-down rotation, the operating rod drives the supporting piece to move left and right through left-right sliding, and a blocking table is arranged on the upper portion of the chassis. The lifting and tilting of the chair seat are respectively controlled through the operating rod, the structure is simple, the cost is low, and the operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of home furnishings, specifically to a chair base device that facilitates control of tilting and lifting. Background Technology

[0002] The seat chassis is a module located between the base and the gas spring. The gas spring control mechanism, which controls the gas spring switch, is mounted on the chassis. For comfort, some manufacturers equip the seats with a tilt function; that is, when the backrest tilts back, the chassis tilts back along with it. The tilt of the chassis is usually controlled by a tilt control mechanism. In other words, to achieve both lifting and tilting functions, the chassis needs two different control mechanisms, which is costly and inconvenient to operate. Summary of the Invention

[0003] The purpose of this invention is to provide a chair base device that facilitates control of tilting and lifting, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A chair base device for easy control of tilting and lifting includes a base assembly. The base assembly includes a lower base and an upper base rotatably connected to the lower base. A control mechanism is provided on the lower base, including an operating lever and a support member. The support member is slidably connected to the lower base, and the operating lever is slidably connected to the lower base and can rotate up and down relative to the lower base. One end of the operating lever extends into the base assembly to press down the gas spring switch, and the other end is located outside the base assembly for human operation. The operating lever controls whether to press down the gas spring switch by rotating up and down, and drives the support member to move left and right by sliding left and right. A stop corresponding to the support member is provided on the upper base. The support member has a first state and a second state, and switches between the first state and the second state by moving left and right. When the support is in the first state, it makes contact with the stop. When the support is in the second state, it does not contact the stop, and the stop does not obstruct the downward rotation of the upper part of the chassis.

[0005] Furthermore, the operating lever is fixedly connected to the rotating slide rod, and a slide groove is provided at the lower part of the chassis. The rotating slide rod slides left and right in conjunction with the slide groove, and the operating lever rotates on the slide groove through the rotating slide rod.

[0006] Furthermore, an upper limit seat is provided on one side of the lower part of the chassis, and the upper side wall of the operating lever is slidably connected to the upper limit seat in the left and right directions, forming the groove between the upper limit seat and the lower part of the chassis.

[0007] Furthermore, the slide groove is provided with a left gear position recess and a right gear position recess on the left and right sides respectively for cooperating with the rotating slide rod. When the support member is in the first state, the rotating slide rod is located on the left gear position recess, and when the support member is in the second state, the rotating slide rod is located on the right gear position recess.

[0008] Furthermore, the operating lever has a toggle part at one end within the chassis assembly, and the operating lever drives the support to move left and right through the toggle part.

[0009] Furthermore, the support member is provided with a limiting groove for limiting the toggle part.

[0010] Furthermore, the support member is provided with a boss for engaging with the stop.

[0011] Furthermore, the upper part of the chassis is provided with a groove corresponding to the boss, and when the support is in the second state, the boss is inserted into the groove.

[0012] Furthermore, an elastic element is provided between the upper part and the lower part of the chassis.

[0013] Furthermore, the elastic element is a spring, and the spring is inclined.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention controls the lifting and tilting of the chair seat by means of a control lever, which is simple in structure, low in cost and easy to operate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention, where the elastic element is not shown.

[0017] Figure 3 This is an exploded structural diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the upper structure of the chassis in this invention.

[0019] Figure 5 This is a schematic diagram of the structure when the upper part of the chassis is removed according to the present invention.

[0020] Figure 6 This is a schematic diagram of the structure of the present invention when the upper part of the chassis and the elastic element are removed.

[0021] Figure 7 This is a schematic diagram of the connection structure between the operating lever and the rotating slide bar in this invention.

[0022] Figure 8 This is a schematic diagram of the installation angle of the elastic element in this invention.

[0023] In the diagram: 1. Lower part of chassis, 100. Gas rod mounting hole; 2. Upper part of chassis, 200. Baffle; 201. Groove; 3. Operating lever; 300. Toggle part; 4. Support; 400. Limit groove; 401. Boss; 5. Upper limit seat; 6. Rotating slide bar; 7. Slide groove; 8. Left gear recess; 9. Right gear recess; 10. Elastic element; 11. Rotating shaft. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-8 A chair base device for easy control of tilting and lifting includes a base assembly. The base assembly includes a lower base 1 and an upper base 2 disposed on the lower base 1. The front ends of the two are rotatably connected by a pivot 11. A control mechanism is disposed on the lower base 1. The control mechanism includes an operating lever 3 and a support member 4. The support member 4 is slidably connected to the lower base 1. The operating lever 3 is slidably connected to the lower base 1 and can rotate up and down relative to the lower base 1. One end of the operating lever extends into the base assembly to press down the gas spring switch, and the other end is located outside the base assembly for operation by a person. The operating lever 3 controls whether to press down the gas spring switch by rotating up and down. The operating lever 3 drives the support member 4 to move left and right by sliding left and right. The upper base 2 is provided with a stop 200 corresponding to the support member 4. The support member 4 has a first state and a second state. The support member 4 switches between the first state and the second state by moving left and right.

[0026] When the support member 4 is in the first state, it is in contact with the stop 200.

[0027] When the support member 4 is in the second state, it does not engage with the stop 200, and the stop 200 does not obstruct the downward rotation of the upper part 2 of the chassis.

[0028] Continue reading Figure 6 and Figure 7 In one embodiment of the present invention, the operating lever 3 is arranged in the left-right direction, and the left end of the operating lever 3 is fixedly connected to the rotating slide rod 6. The rotating slide rod 6 is a round rod structure and is arranged in the front-back direction. The lower part 1 of the chassis is provided with two front and rear slide grooves 7 on the side corresponding to the operating lever 3. The front and rear ends of the rotating slide rod 6 are respectively slidably engaged with the two front and rear slide grooves 7 in the left and right directions. The operating lever 3 rotates on the slide grooves 7 by rotating the sliding rod 6.

[0029] Continue reading Figure 3 and Figure 6In one embodiment of the present invention, a socket and an upper limit seat 5 are provided on the side of the lower part 1 of the chassis corresponding to the operating lever 3. The socket allows the operating lever 3 to pass into the chassis assembly, and the size of the socket is sufficient for the operating lever 3 to rotate up and down. The upper limit seat 5 is located on the left side of the socket, and its main body is a U-shaped structure with a downward opening. The upper side wall of the operating lever 3 is slidably connected to the upper limit seat 5. When the right end of the operating lever 3 is pressed down, the left end of the operating lever 3 is blocked by the upper limit seat 5 and cannot be raised. The front and rear bottom sides of the upper limit seat 5 form two sliding grooves 7 between them and the lower part 1 of the chassis.

[0030] Further reading Figure 6 In one embodiment of the present invention, the lower inner wall of the slide groove 7 is provided with a left gear position recess 8 and a right gear position recess 9 for cooperating with the rotating slide rod 6. When the support member 4 is in the first state, the rotating slide rod 6 is located on the left gear position recess 8. When the support member 4 is in the second state, the rotating slide rod 6 is located on the right gear position recess 9. The left gear position recess 8 and the right gear position recess 9 can provide gear position feedback, which is convenient for operation.

[0031] Further reading Figure 2 and Figure 6 In one embodiment of the present invention, a toggle part 300 is provided at one end of the operating lever 3 located in the chassis assembly. The toggle part 300 is positioned forward relative to the main body of the operating lever 3. A limiting groove 400 is provided on the support member 4 for limiting the toggle part 300. The toggle part 300 extends into the limiting groove 400. The operating lever 3 drives the support member 4 to move left and right through the toggle part 300.

[0032] Further reading Figure 2 and Figure 6 In one embodiment of the present invention, a boss 401 is provided on the support member 4, and a groove 201 corresponding to the boss 401 is provided on the upper part 2 of the chassis. When the support member 4 is in a first state, the support member 4 is in contact with the stop 200 through the boss 401. When the support member 4 is in a second state, the boss 401 of the support member 4 is inserted into the groove 201.

[0033] The aforementioned boss 401, stop 200, and groove 201 can control the rotation amplitude of the upper part 2 of the chassis, thereby coordinating with the tilting of the chair back.

[0034] In other embodiments, the groove 201 may not be used.

[0035] See section 3 for further details. Figure 5 and Figure 8 An elastic element 10 is provided between the upper part 2 and the lower part 1 of the chassis. The elastic element 10 is preferably a spring, which is inclined with the front lower and the rear higher. The inclined angle is preferably 10°. The inclined spring can increase the tilt angle within a limited space.

[0036] When unlocking the air spring for raising or lowering, lift the right end of the operating lever 3 upwards and press down the left end of the operating lever 3 to activate the air spring switch, and the air spring will start working.

[0037] When the seat tilt function is not needed, the support member 4 is in the first state, the rotating slide rod 6 is located on the left stop recess 8, and the stop 200 is in contact with the boss 401. At this time, the upper part 2 of the chassis cannot rotate downward relative to the lower part 1 of the chassis. When the seat tilt function is needed, pull the operating lever 3 to the right, so that the rotating slide rod 6 falls into the right stop recess 9. The operating lever 3 drives the support member 4 to move to the second state. At this time, the boss 401 is directly opposite the groove 201, and the upper part 2 of the chassis is no longer blocked. When the human body leans back, it causes the rear end of the upper part 2 of the chassis to rotate downward relative to the lower part 1 of the chassis. The spring can provide elastic feedback, and when the human body does not lean back, it drives the upper part 2 of the chassis to return to its original position.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chair base device for easy control of tilting and lifting, comprising a base assembly, the base assembly including a lower base (1) and an upper base (2) rotatably connected to the lower base (1), characterized in that, A control mechanism is provided on the lower part (1) of the chassis. The control mechanism includes an operating lever (3) and a support member (4). The support member (4) is slidably connected to the lower part (1) of the chassis. The operating lever (3) is slidably connected to the lower part (1) of the chassis and can rotate up and down relative to the lower part (1) of the chassis. One end of the lever extends into the chassis assembly for pressing down the gas spring switch, and the other end is located outside the chassis assembly for operation by a person. The operating lever (3) controls whether to press down the gas spring switch by rotating up and down. The operating lever (3) drives the support member (4) to move left and right by sliding left and right. A baffle (200) corresponding to the support member (4) is provided on the upper part (2) of the chassis. The support member (4) has a first state and a second state. The support member (4) switches between the first state and the second state by moving left and right. When the support member (4) is in the first state, it is in contact with the stop (200); When the support member (4) is in the second state, it does not contact the stop (200), and the stop (200) does not obstruct the downward rotation of the upper part (2) of the chassis.

2. The chair base device for easy control of tilting and lifting according to claim 1, characterized in that, The operating lever (3) is fixedly connected to the rotating slide rod (6), and a slide groove (7) is provided on the lower part (1) of the chassis. The rotating slide rod (6) and the slide groove (7) slide left and right in cooperation. The operating lever (3) rotates on the slide groove (7) through the rotating slide rod (6).

3. A chair seat chassis device for easy control of tilting and lifting according to claim 2, characterized in that, An upper limit seat (5) is provided on one side of the lower part (1) of the chassis. The upper side wall of the operating rod (3) is slidably connected to the upper limit seat (5) in the left and right directions. The upper limit seat (5) and the lower part (1) of the chassis form the groove (7).

4. A chair seat chassis device for easy control of tilting and lifting according to claim 3, characterized in that, The slide groove (7) is provided with a left gear position recess (8) and a right gear position recess (9) for cooperating with the rotating slide rod (6). When the support member (4) is in the first state, the rotating slide rod (6) is located on the left gear position recess (8). When the support member (4) is in the second state, the rotating slide rod (6) is located on the right gear position recess (9).

5. A chair seat chassis device for easy control of tilting and lifting according to claim 1, characterized in that, The operating lever (3) has a toggle part (300) at one end inside the chassis assembly. The operating lever (3) drives the support member (4) to move left and right through the toggle part (300).

6. A chair seat chassis device for easy control of tilting and lifting according to claim 5, characterized in that, The support member (4) is provided with a limiting groove (400) for limiting the toggle part (300).

7. A chair seat base device for easy control of tilting and lifting according to claim 1, characterized in that, The support member (4) is provided with a boss (401) for engaging with the stop (200).

8. A chair seat base device for easy control of tilting and lifting according to claim 7, characterized in that, The upper part (2) of the chassis is provided with a groove (201) corresponding to the boss (401). When the support (4) is in the second state, the boss (401) is inserted into the groove (201).

9. A chair seat chassis device for easy control of tilting and lifting according to claim 1, characterized in that, An elastic element (10) is provided between the upper part (2) of the chassis and the lower part (1) of the chassis.

10. A chair seat base device for easy control of tilting and lifting according to claim 9, characterized in that, The elastic element (10) is a spring, which is inclined.

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